#! /usr/bin/env bash

# Wrapper for the grafana binary
# This file serves as a wrapper for the grafana binary. It ensures we set
# the system-wide Grafana configuration that was bundled with the package as we
# use the binary.

DEFAULT=/etc/default/grafana

GRAFANA_HOME="${GRAFANA_HOME:-/usr/share/grafana}"

CONF_DIR=/etc/grafana
DATA_DIR=/var/lib/grafana
PLUGINS_DIR=/var/lib/grafana/plugins
LOG_DIR=/var/log/grafana

CONF_FILE=$CONF_DIR/grafana.ini
PROVISIONING_CFG_DIR=$CONF_DIR/provisioning

EXECUTABLE="$GRAFANA_HOME/bin/grafana"

if [ ! -x $EXECUTABLE ]; then
 echo "$EXECUTABLE not installed or not executable"
 exit 5
fi

# overwrite settings from default file
if [ -f "$DEFAULT" ]; then
  . "$DEFAULT"
fi

OPTS="--homepath=${GRAFANA_HOME} \
      --config=${CONF_FILE} \
      --configOverrides='cfg:default.paths.provisioning=$PROVISIONING_CFG_DIR \
                        cfg:default.paths.data=${DATA_DIR} \
                        cfg:default.paths.logs=${LOG_DIR} \
                        cfg:default.paths.plugins=${PLUGINS_DIR}'"

CMD="${1:-}"
shift

# special handling to pass --pluginsDir to cli
# can remove once it fully supports cfg:default.paths.plugins
if [ "$CMD" = cli ]; then
  OPTS="$OPTS \
       --pluginsDir=${PLUGINS_DIR}"
fi

eval $EXECUTABLE "$CMD" "$OPTS" "$@"
